The late David Balme, who took the Enigma and code books off U-110, gave an evening lecture at the Yacht Club of which he was a Member and I was Secretary. At the end he, with permission showed a trailer of the then soon to be released "U-571", with the addition of the postscript that he had requested the producers to include, to the effect that the movie was a work of fiction, based on the exploits of the then Sub Lt Balme and the crew of his ship.